Search for dissertations about: "interspecific interaction"

Showing result 1 - 5 of 12 swedish dissertations containing the words interspecific interaction.

  2. 1. The distribution of brown trout (Salmo trutta L.) in streams in southern Sweden

    Author : Anders Eklöv; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; growth; density; intraspecific competition; predation; cover; interspecific interaction; fish assemblage; pollutant; recolonization; Ecology; Ekologi;

    Abstract : This thesis examines the effect of water quality, habitat and species interactions on the occurrence and abundance of stream fishes in southern Sweden. I found that improvements in water quality between the 1960s and 1990s have led to recolonization of streams by brown trout (Salmo trutta L.), stone loach (Barbatula barbatula L. READ MORE

  4. 2. Behavioural ecology of Indo-Pacific bottlenose and humpback dolphins

    Author : Eva Stensland; Per Berggren; Anders Angerbjörn; Elisabeth Slooten; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Behaviour; ecology; dolphins; Zanzibar; abundance; distribution; tourism; mixed-species groups; interspecific association; social interaction; swim-with-dolphin; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : Dolphins in East Africa face various threats, such as direct hunt, bycatch and habitat degradation. It is therefore important to undertake research that can facilitate necessary conservation and management actions to minimize these threats. READ MORE

  5. 3. Oviposition site selection in mosquitoes : the role of conspecific larvae, heterospecific larvae and microbes

    Author : Zaid Khan; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In mosquitoes, the evaluation and selection of oviposition sites is critical for the growth, development and survival of the offspring. Gravid mosquitoes rely primarily on olfactory cues emanating from breeding water containing, e.g., intra- and interspecific aquatic stages, as well as bacteria for this purpose. READ MORE

  6. 4. Dynamics of the aphid-ant mutualism

    Author : Karolina Tegelaar; Olof Leimar; Judith Bronstein; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mutualism; transgenerational; aphids; aphid-ant; conflict of interest; E -β-farnesene; phenotypic plasticity; predation risk; wing induction; maternal effect; reproductive investment; embryo size; etologi; Ethology;

    Abstract : An appreciation of the role of mutualism is essential when studying ecology and evolution in most ecosystems. Information covering aspects of mutualistic interactions can serve as a complement to the somewhat one-sided perspective from the 1950’s and 60’s that is used when teaching biology. READ MORE

  7. 5. Behaviour of Lycaenid butterfly larvae in their mutualistic interactions with ants

    Author : Annkristin H. Axén; Judith L. Bronstein; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fjärilar; myror; djurekologi; etologi; Ethology;

    Abstract : Interspecific mutualism often involves partners trading different kinds of services. The cost and benefits of the trade may differ from one interaction to the next, or fluctuate over time in a single interaction, due to factors both internal and external to the mutualism itself. READ MORE